Hot-air grate



(No Model.)

J. A. IRONS.

HOT AIR GRATE.

No. 393,236 Patented Nov. 20, 1888.

m ..411. /m/fl# w VW e w %m y/ w c UNITED STATES PATENT OFFICE,

JAMES A. IRONS, OF W'ATER CURE, PENNSYLVANIA.

HOT-Al R G RATE.

SPECIPICATION forming part of Letters Patent No. 393236, dated November 20, 1888.

` Application filed January 1 8,1888. Serial No. 261.1l2. (No model.)

To all whom, it may concern;

Be it known that I, JAMES A. IRONS, of YVater Cnre, in the county of Beaver and State of Pennsylvania, have invcnted certain new and useful Improvements in Hot Air Grates; and I do hereby declare that the following is a full, clear, and exact description of the invention,which will enable others skilled in the art to which it appertains to nake and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon,whieh form part of this specifieation. p

My invention relates to an improvement in hollow hot-air grates.

The object of my invention is to provide means for utilizing the hoat which escapes into the open air from open gratcsand to use said hoat in heating air which can be conveyed to various parts of a house by means of suitable couduits or pipes.

A further object is to -provide a grate which shall consist of hollow grate-bars connected with a hollow back piece, a hollow top bar in communication with the hollow grate-bars, and hollow side pieces in communication with the back piece and front top bar, said hollow grate being provided with one or more cold-air inlets and with one or more hot-air outlets; and a further object is to provide a hollow grate provided with one or more cold-air inlets, one or more hot-air pipes connected with said grate and adapted to convey the hcated air to any desired portion of a house or dwelling, and a hot-air pipe adapted to conduct the heated air to a hot-air chamber, whereby the water in a suitable reservoir is heated.

XVith these ends in View my invention consists in certain novel features of Construction and combinations of parts, more fully described hereinafter, and particularlypointed out in the claims.

Referring to the accompanying drawings, Fignre lisa section of part of a house through a portion of two stories, showing the grate, pipes, &0. Fig. 2 is a top horizontal section of the hollow grate. Fig. 3 is a side View of one of the side pieces, and Fig. 4 is a perspective view of the water-reservoir and hot-air pipe connected with the same.

In the drawings, the reference-letter A represents the outer wall of any suitable building provided with the usual fine or chimney, a.

B represents a hollow grate, preferably located in a fire-place upon the lower floor of the building, so as to bein communication with the flue a. The hollow grate B is eomposed of a hollow back piece or casting, I), which is intended to fit into the wall at the back of the fire-place, and is provided at its rear bottom portion with an opening into its hollow inte rior, into which opening extends the inner end of a cold-air-supply pipe, b', preferably passing through the outer wall ofthe building and comnunicating with the outer air, and the cold air passing through said pipe into the grate can be regulated in its flow by means of a suitable damper or valve, b as shown in Fig. l.

The lower end of the back piece or casting is provided with a laterally and outwardly extending hollow fiange or projection, If, provided with a series of apertnres in its onter Vertical edge, into which apertures are adapted to fit and eXtend the lower ends of hollow grate-bars c, the interiors of which communicate with the interior of the hollow back piece, and said grate-bars eurve ontwardly and upwardly from the fiange on the back piece and open into thelowcr edge ofa hollow front bar or casting, c',which extends across and forms the front top of the grate. The ends of the grate are closed by the hollow end pieces or casting, d d', one for each end, which are curved at their front edges to con form to the-cnrvature of the grate-bars, and at the rear edge of their inner sides or faces the end castings are each provided with the opening (P, which extends 'from the top of the end piece to its bottom, and then laterally a short distance to admit an end of the back piece orcasting, and th us hold the interiors of the back piece and end pieces in communication, as shown in Fig. 2. The two end pieces, the back piece, the front uppcr bar, and the hollow grate-bars are all preferably cast or constructed separately, and are afterward secured together in any suitable manner, so that their intoriors will communicate.

A horizontal diaphragm or partition, m, is located a short distance below the uppcr wall of the interior of the back piece or casting, and forms a chamber, m', in the'upper portion separate froni the rest of the interier of the back piece, as shown in Fig. l. The end pieces are also each provided with a diaphragm or partitien, m' in their upper portions, which form a chamber in the upper portion of each end piece cut off from the rest of their interiers, and said partit-ions 'mi are prel'erably inclincd rearwardly, Fig. 3, and the chambers cut off by the same communicate at their lower front euds with the ends of the interier of the front bar, and at their upper rear ends with the ends of the interier of the chamber m' in the upper portion of the back piece.

It will be observed that the partitions m do not extend the whole length of the end pieces; but at the lower front portions of the same they leave outlets er ports n, opening from the lower intcriers of 'the end pieces into the chambers or flues formed in their` upper portions, se that the het air can pass from the'interior el' the end pieces into the chambers or lue at the top ol' the back piece.

One or more hotair pipcs er flnes,g g',(two are shown in the present case,) eomn'unicate at their lower ends with the interier of the chamber er line in the upper portion of the back'picce, and are adapted te Convey the heated air to any desired portion ol' the building. The hot-airpipes are preferablysecured to the rear side et' the chamber m', and extend upwardly through the walls or llue to the floors above.

A hot-air pipe er flue,f, is securcd. at its lower end to the front edge ef the front top bar of the grate, preferably near one end ol" the same, (see Fig. 2,) and communieates with the interier of the top bar. The hot-air pipc fexteuds pwardly from the grate to a hetair chamber, h. preferably fermed by any suitable metallic dish-shapedreceptacle,1), which is secured upon the wall ol' a room a suitable distance below the mantel, by means of a perforated flange or lip, w. The hot air pipe f passes through the closed bottom ol' thereceptacle, and a waterreserveir, f', is adapted to renovably rest in and close the upper open portion of the receptacle, and thus form the top wall of the hot-air chamber. (See Figs. 1 and i.) The end of the hot-air pipe fextcnds a short distance above the bottom of the hot-air chamber h to prevent water that might leak into said chamber from the reservoir from passing down the het-air chamber into the grate, and the walls of the hot-air chambcr are provided with apertures i, to allow such water to flow out of the chanber, and also te allow the hot air to pass ont, so that a continuous circulation ef hot air will be kept up through the hot-air chanbcr. The het air pipe can bc provided with a suitable valvc er damper, 7, to regulate the flow of'hot air to the chamber h.

The partitien m in the back piece, b, of the grate is prefcrably located se as to be ou the same level as the top of the front top bar.

It will be observed that the cold air enters the lower portion of the back piece through pipe b', and as it becomes heatcd it passes from the lower portion of the back piece up through the hollow grate-bars and into the hollow end pieces, from thenceinto the hollow front top bar, and from thence it flows from the front bar rearwardly through the rearwardly and upwardly inelined 'lues in the upper portions of the end pieces into the chamber m' in the upper portion of the back piece, from whencc it can be cenveyed where desired.

It is clearly evident that numerous slight changes might be made iu the form and arrangeneut of the various parts described without departing from the spirit and scope of my invention; heuce I do not wish to limit myself strictly to the precise constructiou hei-ein set ferth, but consider myself eutitled to all such slight changes.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent of the United States, is-- 1. The combination, with ahollow grateand one or more cold-air inlets, of a hotair-out1et pipo opening into said hollow grate, a hot-air chanber in communication with the grate by means of the outlet-pipc, and a water-reservoir above the hot-air chamber, substantiaily as described.

2. The herein-described hetair grate, censisting of a hollow back piece or casting provided with a longitudinal chamber er iluc in its upper interier cut off from the lower part ol' the interier by a partition or diaphragn, one er more fresh-air pipes or inlets opening inte the lower interier of said back, hollow end picces or castings communicating with the lower interier el' said back, and provided with llues or chanbers in theirupper intcriors comnunicating with the uppcr chamber of the back, a hollow front er top bar cemmunicating,` with the interiors of the end pieces, hollow grate-bars opening into thelowerinterior of the back and extending upwardly and opening into the top or front bar, and one or mere hot air-discharge pipes or outlets, snbstantially as described.

Iu testi meny that I claim the fercgoiug as my own I al'fix my signature in presence of two witnesses.

JAMES A. TRONS.

XVitnesscs:

LU'runn MAGINNIS, .T. E. Icons.

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